As far as I know, I have a Tivo V6 box (based on photographs).
This seems to be a recurring problem whereby I set the thing to record a film and then find only half of it has been recorded.
For example last night at about 23.00 I was on the TV guide screen and found a film due to start at 23.10 and end at 01.15. There was to be a 5-minute break at 00.10 to 00.15 for a film review or something like that. So that's exactly two 2 hour bits with a 5-minute break.
I highlighted the film starting at 23.10 and pressed the "R" button. The "R" symbol appeared on both parts of the showing. I then closed the box down and that was that.
Today, when I went to check the recording had worked, I found it appeared to have commenced recording at the 5-minute break, so had omitted the first hour of the show.
This is not the first time that only half a show has been recorded, what I'm not sure of is whether the facts were identical - i.e. there was a gap and that it was the first bit that was missing. Either way, something is wrong somewhere, whether user fault or system fault.